Pump lubricating system



Oct. 17, 1933. M. 'r. ARCHER 1,931,473

PUMP LUBRICATING sys'rzm Filed April .1, 1929 3 Sheets-Sheet I Fig- 1 2 WWW Oct. 17, 1933. M. T. ARCHER 1,931,473

PUMP LUBRICATING SYSTEM Filed April 1, 1929 v 3 Sheets-Sheet 2 Oct. 17, 1933. M. T. ARCHER PUMP LUBRICATING SYSTEM Filed April 1, 1929 3 Sheets-Shet 3 Patented Oct. 17, 1 933 UNITED STATES PUMP LUBRICATING SYSTEM 1 Merton T. ArchenPittsburgh, Pa.', assignor to The National Supply Company, Toledo, Ohio,

a corporation of Ohio Application April 1, 1929. Serial N6. 351.698 8 Claims. (01. 134-1 1 This invention relates to lubricating systems designed particularly for pumps, but it is applicable to other systems where eccentrics are em- I ployed.

It is the principal object of this invention to provide means whereby eccentrics positioned on opposite sides of a'gear wheel may be thoroughly lubricated by means of lubricant carried up by the gear wheel and distributed laterally and allowed to fall upon specially formed surfaces for conveying the lubricant to the bearing surfaces between the eccentrics and the bushings or linings carried by the eccentric straps. Further objects appear hereinafter.

Referring to the accompanying drawings, Fig. 1 is a vertical section of the gear casing and of the oil distributing parts attached to the casing, the gear wheel, the eccentrics and the bear ings for the-gear wheel shaft being shown in elevation; Fig. 2, avertical section on the line 2-2 on Fig. '1, parts being shown in elevation and broken away; Fig.3, a's'ection on the line 3-3 on Fig. 2; Fig. 4, a perspective view with parts being, in vertical section and broken away, the vertical section extending from one side of the figure to the other, being in the same plane as the section shown at the top of Fig. 1; Fig. 5, a section on the line 55 on Fig. 4; Fig. 6, a fragmentary view showing in perspective a portion of one of the eccentric straps, parts being shown in the ver tical section; and Fig. '7, a section on the line 77 on Fig.6. 1

The casing comprises a main member 1 and the cover member 2 which is secured to the main member by the bolts'3. Bearings 4 in the sides of the casing support the ends of the shaft 5 which carries thelarge spur gear wheel '6 and also the eccentrics '7 and 8, one on each side 01' the gear wheel 6. The bottom of the casing 1 has a sump or reservoir 9 to contain lubricant and into which the gear wheel 6 dips.

The cover 2 supports the vertical baflle 10 which is vertically over the gear wheel 6 and is parallel with the peripheryof the, gear wheel. Each side of the bafile carries an upwardly-open trough 11 extending from one end of thebafile to the other. At each side of the gear wheel 6 and pendent from the cover 2 is a flange 12 parallel with the sides of the gear wheel. These flanges cover the ends of the troughs 11 and have inclined passages 13 therein to conduct lubricant from the troughs down into the spouts 14 projecting laterally from the outer faces of the flanges. The spouts are preferably arranged directly over the center line of the shaft 5 and so that lubricant dropping.

from them falls upon the eccentric straps as hereinafter described. The spoutsare preferably of small width, their end walls communicating with horizontalpassages 15 in the walls of the 1 flanges below the passages 13. The-passages 15 extend for some distance at' each side of each spout l4 and have a long narrow opening 16 facing the space between the, topof the gear wheel and the bottom of the baifie 10 and the troughs 11. These passages 15 extend downwardlyand outwardly anddeliver into the spouts some of the lubricant carried up bythe gear wheel.

The two eccentric structuresare identical.v Accordingly, only that relatingto theeccentric 8 will be described. The eccentric strap comprises two arcuate members 17. and18 provided respec tively with the arcuatebushings .19 and 20 which con'formto the-periphery of theeccentric 8 and form substantially a complete circle "and bears upon the periphery of the eccentric 8. The strap members 17- and 18 have theirends fastened together by bolts 21, the opposing ends of the said members being, preferably in a vertical plane which includes the center of the eccentric. The two opposing ends of the members 17 andlB at the'up erside of the eccentric are formed into two heads 22 and 23", each having upwardly-open.

being-understood that the same descriptionwill apply to the head ,23. Each reservoir 24; feeds lubricant downwardly through a passage 25 into an inclined passage 26 in the ,bushing 19 and thence into thespace between the two'bushings 19 and 20, the lubricant flowing downwardly between the opposing ends of the bushings 19 and 20 and into contact withthe periphery of the eccentric 8; The opposing ends ofthe said bushings are bevelled slightly below tdfacilitate the flow of the lubricant. 1 j r The upper faces of theinembers 17 and 18 are channel-shaped with the channels. 2'7"and 28 opening outwardly. These channels extend from the ends of the heads'22and 23 downwardly to the ledges 29 and 30 respectively. Lubricant passing down the channels. 27 and 28 reaches the periphery of the eccentric 8 through thepassag'es 31 and 32,a portion of 'eachof these, passages being through 'a hollow dowel 33 lying partly in each strap member and its. companion bushing.

These dowels prevent the movement of the bushings in the strap members and at the same time furnish a passage for the lubricant.

The strap member 18 is provided with a connecting rod 34, it being understood that the corresponding strap member for the eccentric 7 has a corresponding rod. In the case of the pump the connecting rods would be connected to the usual cross-head to which the piston rods for the pump pistons would be attached.

As the gear wheel rotates in one direction or the other lubricant will be centrifugally thrown into one of the troughs 11 from which it will flow into thespouts 14'. At the same time some of the oil carried up by the gear wheel wil1,flow through the opening 16 and into the passages 15 and thence into the spouts, The lubricant falling from the spouts will drop upon the eccentrics, some of the lubricant falling into the reservoirs 24 and some into the channels 27 and 28, the lubricant passing into the eccentric bearings in a manner already described.

. I claim:- 1 a 1. In a lubricating system, a casing, a. shaft having'bearings therein, a gear wheel and an eccentric on each side thereof rotatable withthe shaft, a trough integralwith the casing and positioned' above the gear wheel and spaced therefrom and adapted to receive lubricant centrifugally from the gear wheel, a spout at each end of the trough and beyond the sides ofv the gear wheel to receive lubricant from the trough, means for receiving lubricant irom'the trough and convey.- ing it to the bearing surfaces of the eccentric,

vertical flanges adjacent to each side of the gear wheel and pendent from the trough, and passages below the trough and in the flanges for conveying lubricant fromthe upper part of the gear wheel to the spouts. is

2.;In a lubricating system, agear wheel, an eccentric rotating therewith and adjacent thereto, a strap about the eccentric, a bushing between the eccentric andt-he strap andbearing on the periphery of the eccentric, a head on-the upper side of the strap, a lubricant reservoir on the head, means to delive'rlubricant fromthe' reservoir to the periphery of the eccentric, lubricant receiving and conducting channelsin the strap at opposite sides of the head, -,1neans1to.lead lubricant' from the channels "to the said periphery,

7 receiving and conducting channels in'the strap 7 at opposite sides of the head, means to lead lubricant from the channels to the said periphery, and means for receiving lubricant from the upper part of the gear wheel anddirecting it into the reservoir and the channels, a portion of the last named means consisting of hollow'dowels connectingeach strap to the adjacent bushing.

4. A structure vertically over the" center of a wheel and having atits sides and integral therewith pendent flanges opposite the upper side portions of the wheel, spouts carried by the outer sides of the flanges, there being openings in the flanges for'oil to pass laterally from the upper portion of the wheel, a trough in that portion of the said structure which is over the wheel to receive oil centrifugally therefrom and passages to lead oil from the trough to the spouts, and bearings to which the oil is supplied from the said spouts, f V

5. A structure vertically over the center'of a wheel and having at its sides and integral therewith pendent flanges opposite the upper side portions of the wheel, spouts carried by the outer sides of the flanges, there being openings in the flanges for oil to passlatcrally irom the upper portion of the wheel, two troughs in that portion'of the structure which is over the wheel, the troughs being arranged, one to receive oil centrifugally from the wheel when it rotates'in one direction and the other to receive oil centrifugally from the wheel when it rotates in the opposite direction, passages to lead on from the trough to the spouts, and bearings to which the oil is supplied from the said spouts. p I 7 6. A casing, a horizontal rotary shaft extending through the same, a gear wheel in the casing and on the shaft, eccentrics in the casingand at opposite sides of the, wheel, a top cover for the casing, and an oil-receiving and distributing structure carried by the under side of the cover, the said structure being located vertically over the center of the wheel and having a spout arranged laterally of the wheel to feed oil to the eccentrics, a trough arranged to receive oil centrifugally from the wheel, means to lead'oil from the trough to the spouts, depending flanges at the sides of the wheel, and passages inthe flanges to carry the oil from the spouts 7. A casing, a horizontal rotary shaft extending through the same, a gear wheel inthe casing and on the shaft, eccentrics in thecasing and at .opposite sides of the wheel, a top cover for the the sides of the 'wheel to casing, and-an oil-receiving and distributing structure carried by the under side of thecover, the structureheing located vertically over the center of the wheel and having a spout arranged laterally of the wheel to feedoil to the cocentrics, a trough arranged to receive oil centrifugally from the wheel whenit rotates in one di-' rection, a trough arranged to receive oil centrifugally from the wheel when it rotates in the otherdirection, means tolead oil from the trough to the, spouts, depending flanges at the sides of thewheel, and passages in the flanges to carry the oil from'the sides of the wheel to the spouts.

3.. In. a lubricating system,a c asing including a removable cover on its upper side, a gear wheel within the casing and below the cover, eccentrics adjacent to each side of the gear wheel and rotatable; with thegear wheel and requiring ludirection; and means conveying the. lubricant from each trough to the eccentrics. a

' i MERTON ARCHER. 

